Sorry to sour your future-casting, but this "killer app" has been a non-starter for many many years. Except for some niches where the flow of data is the primar

Sorry to sour your future-casting, but this "killer app" has been a non-starter for many many years. Except for some niches where the flow of data is the primary thing you want to express, visual languages are too cumbersome. See http://en.wikipedia.org/wiki/Visual_programming_language http://en.wikipedia.org/wiki/Visual_programming_language